TY - JOUR AU - Llambías, Eduardo J. AU - Leanza, Hector A. PY - 2005/09/30 Y2 - 2024/03/28 TI - Lahar deposits of the Molles Formation in Chacay Melehue, Neuquén: evidence of Jurassic volcanism in the Neuquén basin JF - Revista de la Asociación Geológica Argentina JA - RAGA VL - 60 IS - 3 SE - DO - UR - https://revista.geologica.org.ar/raga/article/view/1115 SP - 552-558 AB - <p>We describe lahar deposits from the Chacay Melehue area, in the north-western region of Neuquén province. These deposits, which have been previously interpreted as pillow lavas or as forming part of a normal turbiditic sequence, are stratigraphically located in the Los Molles Formation of the Cuyo Group. On the basis of ammonites found in the section, they are assigned to the proximity of the Toarcian - Aalenian boundary. Their origin appears to be related to a volcanic paroxysm occurring in the magmatic arc area located some tens of kilometers to the west.</p> ER -